‘short cut to ground’ on Adblue heater, resistor fix. Anyone done it on here? W221.

[Mwaite1985]

Hello all,

I have had countless issues with my S350Cdi.

Getting there now slowly, I have the issue of the ‘Adblue heater has a short cut to ground’

& DPF pressure sensor is out of range (unsure what this means)

So I am looking to try the resistor fix as my live data is showing 0 degrees for the adblue solution. This is sadly making the car smoke adblue on idle when warm (it stinks).

I am guessing the above is happening due to it seeing 0 degrees in the ecu.

Has anyone on here managed to try the resistor fix?with a positive outcome.

I am hoping to do the fix and see if this helps the dpf issue too.

Thanks all and thanks in advance.

Matthew

 

[LostKiwi]

DPF pressure sensor is back left of the engine (looking at the engine from the front of the car). Bosch ones are around £40 from Amazon.

Out of range simply means the value of the reading is over or under the expected values. This can be a DPF issue, leaking pressure differential pipe (there are two connect to the sensor) or bad sensor.